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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2010-08-21 01:52:37 +0200 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2010-08-24 13:43:20 -0700 |
| commit | b879dc4b3e81069e3f715b7569bb0f43eed76c76 (patch) | |
| tree | b60fadcfd78c7b4fa086f381333786dc42671cab /drivers | |
| parent | 79dd9182db2072d63ccf160bb9a3463b1c952723 (diff) | |
| download | linux-stable-b879dc4b3e81069e3f715b7569bb0f43eed76c76.tar.gz linux-stable-b879dc4b3e81069e3f715b7569bb0f43eed76c76.tar.bz2 linux-stable-b879dc4b3e81069e3f715b7569bb0f43eed76c76.zip | |
ACPI/PCI: Reorder checks in acpi_pci_osc_control_set()
Make acpi_pci_osc_control_set() attempt to find the handle of the
_OSC object under the given PCI root bridge object after verifying
that its second argument is correct and that there is a struct
acpi_pci_root object for the given root bridge handle, which is
more logical than the old code.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/pci_root.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 1f67057af2a5..e10dbafa0569 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -378,10 +378,6 @@ acpi_status acpi_pci_osc_control_set(acpi_handle handle, u32 flags) acpi_handle tmp; struct acpi_pci_root *root; - status = acpi_get_handle(handle, "_OSC", &tmp); - if (ACPI_FAILURE(status)) - return status; - control_req = (flags & OSC_PCI_CONTROL_MASKS); if (!control_req) return AE_TYPE; @@ -390,6 +386,10 @@ acpi_status acpi_pci_osc_control_set(acpi_handle handle, u32 flags) if (!root) return AE_NOT_EXIST; + status = acpi_get_handle(handle, "_OSC", &tmp); + if (ACPI_FAILURE(status)) + return status; + mutex_lock(&osc_lock); /* No need to evaluate _OSC if the control was already granted. */ if ((root->osc_control_set & control_req) == control_req) |